<template>
  <el-container class="home-container">
    <el-header>
      <div>
        <img src="../assets/heima.png" />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <el-container>
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 菜单 -->
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409fff"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          :router="true"
          :default-active="activePath"
        >
          <el-submenu
            :index="item.id + ''"
            v-for="item in menulist"
            :key="item.id"
          >
            <template slot="title">
              <i :class="iconsObj[item.id]"></i>
              <span>{{ item.authName }}</span>
            </template>
            <el-menu-item
              :index="'/' + subitem.path"
              v-for="subitem in item.children"
              :key="subitem.id"
              @click="saveActivePath('/' + subitem.path)"
            >
              <template slot="title">
                <i class="el-icon-menu"></i>
                <span>{{ subitem.authName }}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      menulist: [],
      iconsObj: {
        125: 'iconfont icon-users',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      isCollapse: false,
      activePath: ''
    }
  },
  created() {
    this.loadMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout() {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async loadMenuList() {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$msg.error(res.meta.msg)
      // this.$msg.success(res.meta.msg)
      this.menulist = res.data
      // console.log(res.data)
    },
    toggleCollapse() {
      this.isCollapse = !this.isCollapse
    },
    saveActivePath(activePath) {
      console.log(activePath)
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}

.el-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
  font-size: 20px;
  padding-left: 0;
  background-color: #373d41;

  > div {
    display: flex;
    align-items: center;
    > span {
      margin-left: 15px;
    }
  }
  .el-button {
    margin-right: 15px;
  }
}

.el-aside {
  background-color: #333744;
  .toggle-button {
    background-color: #4a5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
  }
  .el-menu {
    border-right: none;
  }
  .iconfont {
    margin-right: 10px;
  }
}

.el-main {
  background-color: #eaedf1;
}
</style>
